Convert PowerPoint to PDF/XPS/Image using Java

This article will introduce how to use a 3rd party free Java API to convert a PowerPoint document to other file formats to meet the needs of different occasions.

Installation (2 Methods)
● Download the free API (Free Spire.Presentation for Java) and unzip it, then add the Spire.Presentation.jar file to your project as dependency.

● Directly add the jar dependency to your maven project by adding the following configurations to the pom.xml.

<repositories>
        <repository>
            <id>com.e-iceblue</id>
            <name>e-iceblue</name>
            <url>http://repo.e-iceblue.com/nexus/content/groups/public/</url>
        </repository>
</repositories>
<dependencies>
    <dependency>
        <groupId>e-iceblue</groupId>
        <artifactId>spire.presentation.free</artifactId>
        <version>3.9.0</version>
    </dependency>
</dependencies>

[Example 1] Convert PowerPoint to PDF:

import com.spire.presentation.FileFormat;
import com.spire.presentation.Presentation;

public class PPTXtoPDF {

    public static void main(String[] args) throws Exception {

        //create a Presentataion instance
        Presentation presentation = new Presentation();

        //load the sample PowerPoint file
        presentation.loadFromFile("Polar bears.pptx");

        //save to PDF file
        presentation.saveToFile("toPDF.pdf", FileFormat.PDF);
        presentation.dispose();
    }
}

[Example 2] Convert PowerPoint to XPS:

import com.spire.presentation.*;

public class PPTtoXPS {
    public static void main(String[] args) throws Exception{

        //create a presentation instance
        Presentation ppt = new Presentation();

        //load the sample PowerPoint file
        ppt.loadFromFile("Polar bears.pptx");

        //save to XPS file
        ppt.saveToFile("toXPS.xps", FileFormat.XPS);
        ppt.dispose();

    }
}

[Example 3] Convert PowerPoint to Image:

3a) Convert PowerPoint to BMP Image:

We could easily convert specific presentation slide to BMP image in Jpg, Png, Tiff, Bmp by using the ISlide.SaveAsImage() method offered by Free Spire.Presentation for Java, here I will convert a .pptx to .png:

import com.spire.presentation.Presentation;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;

public class ToImage {
    public static void main(String[] args) throws Exception {

        Presentation ppt = new Presentation();
        ppt.loadFromFile("C:\\Users\\Administrator\\Desktop\\Sample.pptx");
        //Save PPT document to images
        for (int i = 0; i < ppt.getSlides().getCount(); i++) {
            BufferedImage image = ppt.getSlides().get(i).saveAsImage();
            String fileName = String.format("output/ToImage-%d.png", i);
            ImageIO.write(image, "PNG",new File(fileName));
        }
        ppt.dispose();

    }
}

3b) Convert PowerPoint to SVG:

import com.spire.presentation.Presentation;
import java.io.FileOutputStream;
import java.util.ArrayList;

public class ToSVG {
    public static void main(String[] args) throws Exception {

        Presentation ppt = new Presentation();
        ppt.loadFromFile("Polar bears.pptx");
        //Save PPT document to images
        ArrayList svgBytes = (ArrayList) ppt.saveToSVG();
        int count = svgBytes.size();
        int len = svgBytes.size();
        for (int i = 0; i < len; i++) {
            byte[] bytes = (byte[]) svgBytes.get(i);
            FileOutputStream stream = new FileOutputStream(String.format("output/ToSVG-%d.svg", i));
            stream.write(bytes);
        }
        ppt.dispose();

    }
}